Improvement in machines for burnishing the shanks of boots and shoes



A. c. CAREY. Machines for Burnishing theShanks of Boots and Shoes.

No. 142,990, Patented Septemb er23,l873.

NITED STATES PATENT Orrron.

AUGUSTUS c. CAREY, OF MALDEN, ASSIeNoR T0 HIMSELF ANn DEAN VPEABODY, OFLYNN, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR BURNISHING THE SHANKS OF BOOTS AND SHOES.

Specification forming part of Letters Patent No. 142,990, datedSeptember 23, 1873; application filed August 25, 1873.

To all whom it may concern Be it known that I, AUGUSTUS O. CAREY, ofMalden, Middlesex county, Massachusetts, have invented certainImprovements in Machines for Burnishing the Shank Portion of the Solesof Boots and Shoes, of which the following is a specification:

On the 12th day' of March, 187 2, Letters Pat ent of the United Statesnumbered 124,479 were issued to myself and James K. Blanchard andFrederick S. Hunt for a machine for polishing or burnishing the bottomsof the shanks of boot and shoe soles, the principle of which machineconsisted. in the employment of a burnishing-tool properly supported ormounted and operated, and moving in a reciprocating backward and forwardpath longitudinally of a stationary last or jack, which supported theboot or shoe. In practical operation of this machine, I have found thatin mens work, in which the sole is comparatively flat, the reciprocatingburnisher is all that is desired; but in womens work, in which thecurvature or concavity of the sole is very much greater, the burnisher,traveling in a path nearly horizontal, does not adapt itself readily tosuch deep curvature or depression, but is liable to pass over withouteffectually burnishing some portions of the shank. To provide a remedyfor this difficulty is the purpose of my present invention; and incarrying out the same I adopt a machine in general characteristicssimilar to that shown in Letters Patent before named, but I suspend theburnishing-tool over the jack from or upon a rocker-shaft, or otherwiseapply it in pedestal, bearing at top a horizontal tablet or bed-plate,B,'upon one rear corner of which bed-plate a standard, 0, is erected,within the upper part of which a horizontal driving-shaft,

D, is mounted, such shaft carrying upon its inner end a crank orcrank-wheel, E, to the Wrist-pin of Which the rear end of a horizontalpitman, F, is pivoted, the front extremity of such pitman being in turnpivoted to a stud or boss, G, erected upon the center of a'horizontalrock-shaft, H, which is mounted in vertical slots at a formed inperpendicular standards I I erected upon the front end of the table B,the rock-shaft H being disposed at some considerable elevation above andtransversely of the bed-plate, and parallel to the driving-Shaft D. Toeach extremity or journal of the rock-shaft or beam H, I pivot the endof one of two rigid rods, J, the lower extremity of such rods beingattached to opposite ends of a cross-bar, b, making part of a treadle orpedal, 0, which is disposed at the base of the pedestal of the machine,and pivoted to the rear portion thereof in a suitable manner, thefoot-rest d of suchpedal being below the front end of the tablet B, andin a convenient position for the foot of the operator, the pedal, andconsequently the rock-shaft and burnishing-tool, being elevated to theirhighest position by the action of a coiled spring, f, or its equivalent,which is secured to the pedal and tablet, as shown in the drawing.

The jack herein shown for supporting the boot is substantially the sameas that shown in Letters Patent before referred to, and consists of ahorizontal last, 9, pivoted or swiveled to the upper part of an uprightpost, h, in such manner as to be susceptible of freedom of motion,either in a longitudinal tilting direction ora lateral rocking one,while the post h is mounted upon the top of a sliding rest or plate, z',disposed and slidin g longitudinally upon the top of the tablet B andbelow the burnishing-tool, such plate *5, and with it the jackor last,being so situated with re spect to the said tool that the jack may beadvanced toward the workman and from the immediate vicinity of suchtool, in order to receive a boot, and having received a boot to bepushed back below the tool into such a position'as to be operated uponby the latter when lowered in contact with it.

The operation of this machine will be readily understood, as it will beat once seen that the driving-shaft. being in rotation, and theburnishing-tool describing a series of short vibrations, the workman hasonly to depress such tool into contact with the shank of the sole toelfcct the burnishin g of the latter, the jack and boot being movedbackward and forward, and tilted longitudinally or rocked laterally asthe burnishing progresses, until all parts of the shank are equaly wellpolished, the vertical variations of the tool throughout the curvatureof such shank being governed by the treadle or pedal before named. v

The burnishing-tool is to be heated by suitable means, that hereinadopted being a gaspipe entering a concavity of the tool, a jet orfianiie of gas imparting the desired heat to such too I claim-;-

1. In mechanism for burnishing the shanks of boot and shoe soles, thecombination, with a jack for holding the boot or shoe, of a burnisher,located above or opposite to the sole of the jack, and vibrating upon anaxis movable nearer to or farther from the jack, as oocasion demands,and during the continuance of the vibratory movement of 1 the burnisher,

substantially as and for the purposes hereln

